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In a piston cylinder assembly , the pressure and the tempreture of air are 200 KPa and the 500 c initially. The piston cross-sectional area is 0.2 m^2.The air is now cooled. what is the pressure in
An arrow is fired from a castle tower at an angle of 40 degrees above horizontal, and with a speed of 62 m/s. What is the speed of the arrow as it hits the ork
Time standards are now based on atomic clocks. A promising second standard is based on pulsars, what is the associated uncertainty
A cubic metal box with sides of 18 cm contains air at a pressure of 1 atm and a temperature of 311 K. Find the force due to the internal air pressure on each wall
The Earth's orbit has a radius of 1.52·1011 m, and that of Mercury has a radius of 6.98·1010 m. What is the length of a vector from Earth to Mercury
A 9.15 kg object on a horizontal frictionless surface is attached to a spring with k = 2350 N/m. find the initial potential energy of the block-spring system
The specific heat of a 98 g block of material is to be determined. The block is placed in a 25 g copper calorimeter that also holds 60 g of water. Determine the specific heat of the block
The specific heat of a certain metal can be determined by measuring the temperature change that occurs when a piece of the metal is heated, What is the specific heat of the metal
A dipole has a +5e charged particle and a -5e charged particle separated by a distance of 6 nm. What is the magnitude of its dipole moment
Two charges are brought together until they are 90.0cm apart, causing the electric force between them to increase by a factor of exactly 6. What was their initial separation distance
An electron and a proton are separated by 2.4 nm, What is the magnitude of the force on the electron
A combination mercury- steam turbine takes saturated mercury vapor a boiler at 500 C and exhausts to steam boiler at 240 C. what is the ideal efficancy of this combination
A positive charge of 0.800? C is located in a uniform field of 9.00×104 N/C. How close are the two charges
A uranium and iron atom reside a distance R = 43.90 nm apart. The uranium atom is singly ionized; What is the magnitude of the force on the electron from the uranium ion
Dave needs to get groceries from the store, which is a distance of D=2.8km east of his house, What is the direction of Dave's displacement for the entire trip
A plane accelerates from rest at a constant rate of 5.00m/s2 along a runway that is 1800m long. What is the time tTO needed to take off
A 120-V motor has mechanical power output of 3.60 hp. It is 87.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
The force lightly damped harmonic oscillator of mass, 0.062 kgs, driving force F0 = 4.4 N and linewidth 35 radians/second, Determine the new damping constant
A system with m = 0.026 kg , k = 35 N/m and b = 0.59 kg/s is driven by a harmonically varying force of amplitude 3.6 N. Find the amplitude of the steady-state motion
What is the linear speed of Saturn in its orbit about the sun? Give your answer in meters per second
A 1600·kg car traveling with a velocity of 6·m/s north collides head-on with a 3200·kg truck traveling with a velocity of 4·m/s south. What impluse is delivered to the tru
During a physics experiment, helium gas is cooled to a temperature of 20.0 K at a pressure of 0.150 atm, What are the mean free path in the gas
A proton is at the origin and an electron is at the point x = 0.45nm , y = 0.35nm. Find the electric force on the proton
Calculate the edge length of a cube that has the same volume as a sphere of radius 4.0 cm. How much greater is the surface area of the cube than that of the sphere
Suppose there is an astronaut who is traveling at a significant fraction of the speed of light. How long does it take according to the astronaut in years